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E90/E91/E92/E93 (2006 - 2013) The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

I noticed every once in a while that Blackberry would be slow to start. I took her into dealer for battery check and some other maintenance as she's coming up on 50K miles. They found that while at rest...she was being woken up way too many times due to the controller for the idrive causing excessive battery drain. They replaced the con module and the battery and everything is ok now. I didn't even know the idrive controller was supposed to light up.

You can help this problem by locking her while she sleeps, even if you park in a secure home garage. When the car is not locked it will stay awake longer than if it is locked, thus draining the battery more.

You can help this problem by locking her while she sleeps, even if you park in a secure home garage. When the car is not locked it will stay awake longer than if it is locked, thus draining the battery more.

You can help this problem by locking her while she sleeps, even if you park in a secure home garage. When the car is not locked it will stay awake longer than if it is locked, thus draining the battery more.

I have my doubts this observation would be the case if the car, like mine, had the factory alarm system.